Polar Air Duplex Industrial Plus 7.5HP V4 62CFM 1- Phase 2-Stage 120 Gal. Horizontal Stationary Electric Air Compressor-W/ Pressure Lube Pump , Isolator Pads, Belt Tensioner, Auto Drain, alternating switch
Polar Air Duplex Industrial Plus 7.5HP V4 62CFM 1- Phase 2-Stage 120 Gal. Horizontal Stationary Electric Air Compressor-W/ Pressure Lube Pump , Isolator Pads, Belt Tensioner, Auto Drain, alternating switch - Image 2
Polar Air Duplex Industrial Plus 7.5HP V4 62CFM 1- Phase 2-Stage 120 Gal. Horizontal Stationary Electric Air Compressor-W/ Pressure Lube Pump , Isolator Pads, Belt Tensioner, Auto Drain, alternating switch - Image 3
Polar Air Duplex Industrial Plus 7.5HP V4 62CFM 1- Phase 2-Stage 120 Gal. Horizontal Stationary Electric Air Compressor-W/ Pressure Lube Pump , Isolator Pads, Belt Tensioner, Auto Drain, alternating switch - Image 4
Polar Air Duplex Industrial Plus 7.5HP V4 62CFM 1- Phase 2-Stage 120 Gal. Horizontal Stationary Electric Air Compressor-W/ Pressure Lube Pump , Isolator Pads, Belt Tensioner, Auto Drain, alternating switch - Image 5
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Polar Air Duplex Industrial Plus 7.5HP V4 62CFM 1- Phase 2-Stage 120 Gal. Horizontal Stationary Electric Air Compressor-W/ Pressure Lube Pump , Isolator Pads, Belt Tensioner, Auto Drain, alternating switch

POLAR

$8,288.81

Pressure Lubrication Pump

Maximum Protection for Critical Components

Pressure lubrication reduces friction and internal wear by delivering a continuous flow of oil to each bearing point via a gear oil pump, keeping bearings cool and extending pump life. Each crankshaft and connecting rod is gun-drilled for precise oil flow, while a spin-on automotive-style oil filter ensures clean oil for maximum longevity. An analog pressure gauge allows operators to monitor oil pressure accurately, providing reliable performance and peace of mind.

100% Cast Iron Pump Features

Many compressors rely on aluminum components, which do not offer the same durability and rigidity as cast iron. All major components of our compressors are constructed from cast iron, including:


● Crankcase
● Cylinder heads
● Cylinders


● Connecting rods
● Crankshaft
● High-pressure piston

High Performance

Pressure Lubricated pumps feature a high-performance pressure lubrication system, delivering superior protection and longevity under demanding conditions. A gear-driven oil pump, mounted to the rear of the crankshaft, generates positive oil pressure, ensuring consistent lubrication throughout the system.

Rifle Drilled

All crankshaft and connecting rods are rifle-drilled, allowing direct oil flow to key wear points— including bearings and other high-friction components. A SPIN ON automotive-style oil filter provides clean, efficient filtration for optimal performance and simplified maintenance during oil changes.

Critical Components Coverage

Unlike splash-lubricated systems, pressure lubrication delivers oil precisely where it's needed, reducing friction, wear, and heat—especially in high-stress, continuous-duty environments. This is the most effective method for keeping your compressor running stronger, longer.

Optional Head Unloaders

Head unloaders are ideal for constant-run applications. They relieve the intake valve during operation, improving pump cooling and reducing overall wear under heavy workloads. This feature enhances reliability and extends the service life of the compressor in demanding environments. On our gas-powered compressors, continuous-run head unloaders provide decompression during engine startup, reducing load on the electric starter and ensuring smoother, more efficient starts.

Piston Rings

Our pumps utilize a four-ring piston design, featuring precision-engineered overlap rings that minimize compression loss and significantly reduce oil carryover. This configuration enhances sealing efficiency, improves overall pump performance, and supports long-term reliability under demanding operating conditions.

Gaskets

Our pumps feature high-quality, non–oil-absorbent gaskets designed to minimize oil leakage. This ensures a more reliable seal, reduces maintenance requirements, and contributes to the long-term efficiency and durability of the pump.

flywheel

Flywheels 5–25 HP

Our Eaton pumps feature heavy-duty cast iron flywheels designed to maximize energy efficiency and performance. The increased mass generates greater kinetic energy, reducing amp draw and lowering overall energy consumption. Each flywheel is equipped with multiple B-groove belts, providing a larger contact surface area to extend compressor belt life. Additionally, flywheels are engineered with optimized cooling fins to enhance compressor pump cooling capacity.

  1. 5 HP – 16” flywheel, (2) B-style groove belts, 6 large cooling fins
  2. 7.5 / 10 HP – 20” flywheel, (2) B-style groove belts, 9 large cooling fins
  3. 15 / 20 HP – 24” flywheel, (3) B-style groove belts, 6 large cooling fins
  4. 25 HP – 20” flywheel, (4) B-style groove belts, 9 large cooling fins

Piston and Connecting Rod

Rods1

  1. Cast Iron High-Pressure Pistons

    Must be cast iron for long life. Designed to withstand heavy loads, they prevent cylinder scoring and pump failure, unlike aluminum high-pressure pistons used by some competitors.


  2. CNC-Machined Solid Cast Iron Connecting Rods

    Provide maximum rigidity and strength for long-term reliability. Competitor rods often use aluminum, which is prone to failure.


  3. Replaceable Bearing Inserts & Wrist Pins

    Allow full rebuildability of the connecting rod assembly, extending pump life. The connecting rods are fully rebuildable and not throw-away, unlike many competitor designs.


  4. Low-Pressure Pistons (Two-Stage Pumps)

    Made from aluminum for balance and efficiency, as they operate under low stress (~45 PSI).

Rods2

  1. Advanced Piston Rings

    We use four rings instead of three, designed to overlap each other: two oil control rings remove excess oil on the downstroke, and two compression rings seal under compression to prevent blow-by. This design maximizes sealing, reduces oil carryover, and extends ring life.


  2. Superior Connecting Rod Design

    Maintains strength at the rod’s base, preventing catastrophic failure common in aluminum rods. At the crankshaft end—the point where aluminum rods commonly fail—cast iron provides the most reliable long-term performance.


  3. Rifle-Drilled Connecting Rod Oil Port

    Allows oil to travel through the crankshaft to the rifle-drilled passage in the connecting rod and up to the piston pin and bearing, ensuring continuous lubrication and extended component life.

Disc Valves

  1. CNC-Machined Concentric Ring (Disc) Valves

    Precision surface-ground for superior sealing, durability, and extended service life. Also known as concentric ring valves, this design is significantly more reliable than feather or fixed reed valves commonly used by competitors. Although more costly to manufacture, disc valves deliver greater longevity and consistent, trouble-free performance. Service is simple and efficient—remove the retainer, lift out the valve for inspection, and reinstall it within minutes. In contrast, reed valve systems require substantially more service time and are more prone to issues.


  2. Head Unloader Option

    All valves are engineered to support an automatic head unloader system. Head unloaders are only included on fully packaged electric units, while on gas-driven units, the unloader is included on all models. Recommended for electric units operating at 40% or greater duty cycle, head unloaders save energy, improve efficiency, reduce wear, and extend equipment life while protecting the electric motor and magnetic starter by minimizing repeated starting under load. The pilot valve works with a ball valve connected to it; under high duty cycle applications (over 40%), the ball valve can be opened to allow continuous-run operation. On electric units, the unloader works with the pilot valve to unload the compressor at preset pressure, holding the intake valve open to prevent compression while the piston continues cycling. This allows cool air to circulate through the cylinder, dissipating heat and reducing internal temperatures. On gas-powered continuous-run units, the head unloader reduces starting drag, improves ease of starting, lowers fuel consumption, and minimizes engine strain.

Oil Pump

  1. Oil Pump Bleeder Valve

    Allows for quick and efficient priming of the oil pump.


  2. Liquid-Filled Oil Pressure Gauge

    Provides clear, accurate oil pressure readings for easy monitoring during operation.


  3. Automotive-Style Gear Oil Pump

    Designed for reliability, this pump pressurizes the internal crankshaft bearings and the upper connecting rod assembly, delivering oil to critical wear points to improve bearing cooling and extend overall engine and pump life.


  4. Adjustable Oil Pump Regulator

    Enables precise oil pressure adjustment across varying RPM ranges.


  5. Automotive-Style Spin-On Oil Filter

    Effectively removes debris and contaminants from the oil, helping extend pump service life.

pressure

Cylinder Heads

  1. Solid Cast Iron Cylinder Heads

    We do not use aluminum cylinder heads due to their tendency to experience head gasket failures, and because most are equipped with reed-style valves that typically result in shorter service life. Our cast iron heads are engineered for maximum durability and extended performance. Tapped holes provide superior strength compared to aluminum heads, while cast iron maintains rigidity under demanding conditions. The disc valve design ensures a secure head gasket seal without the need for retorquing.


  2. Precision-Machined Disc Valve Design

    Allows for quick valve inspection and simplified maintenance. Recognized as one of the most reliable valve systems in the industry.


  3. High-Quality Disc Valves

    Designed for easy serviceability, long valve life, and dependable, trouble-free operation.


  4. Head Unloaders

    Compressors equipped with the head unloader option improve efficiency and extend electric motor life. When maximum tank pressure is reached, the preset pilot valve unloads the compressor, allowing the motor to continue running rather than repeatedly starting and stopping. This reduces amp draw by up to 60% while unloaded and minimizes electrical and mechanical wear. Head unloaders are also used on our gas-powered units to minimize load on the electric start system, increasing starter life and reducing fuel consumption.

Cylinder Construction

  1. Cast Iron Cylinders

    CNC-machined to maintain overall flatness and precise tolerances. The precision cylinder bore ensures concentricity, reducing oil carryover and supporting long-lasting piston performance.


  2. Deep Fin Cooling Fins

    Designed to maximize surface area for efficient cylinder cooling, extending pump life under high-duty cycle operation.


  3. 100% Cast Iron Construction

    No aluminum sleeves. Unlike aluminum, cast iron handles high-duty cycle compression efficiently. Many competitors claim cast iron but use aluminum beneath the paint—Eaton pumps are truly all cast iron.


  4. Deep-Bored and Threaded Holes

    Provide solid head retention and allow proper torque application, ensuring long-term durability of cylinder and head gaskets.


  5. Precision-Honed Cylinder Surfaces

    Every pump maintains measured cylinder honing, promoting easier break-in, reduced oil carryover, and longer piston ring life.

cylinder

Motor

These units have name brand OPD (open drip motors) on them, all of which carry a five-year warranty. All of our motors are low RPM (1750 rpm), versus the higher RPM motors (3450 RPM) used on many competitive units. 1750 RPM motors run much cooler than 3450 RPM motors, because of the higher torque factor. They also yield low harmonic distortion, provide much higher torque in cold weather starting and requiring less electricity under start up.

  • High quality ball bearings on the front and rear of the motor shaft
  • Large starting and running capacitors15 Service Factor load. This means the motor can be pulled 15% over full load for more break horsepower
  • Dynamically balanced armature for low vibration levels

Continuous Run/Dual Control Feature

Smart Energy-Saving Operation

Dual Control

Our dual control system offers greater operational flexibility. Choose between Auto Start/Stop Mode or Continuous Run Mode based on your compressor’s usage pattern:

● Auto Start/Stop is ideal when usage is 30% or less.
● Continuous Run is better when frequent cycling exceeds 30%.

Continuous Run Mode

The Continuous Run Mode decompresses the intake valves using a pilot valve with a preset PSI, reducing start-up stress on the motor. This prevents wear on the electric motor, centrifugal switch, magnetic starter, and cuts down on energy spikes—helping to lower your electricity bill. Additionally, when freewheeling (not compressing), the pump continues to cool internally, helping dissipate excess heat generated during compression and protecting the system from long-term wear.


Riser

Our pump mounting plate riser is designed to raise the pump allowing 360-degree air flow from the flywheel to cool the pump oil reservoir. Pump mount risers also allow air to flow under the pump for maximum cooling.


Auto Drain

Operation

A dual timer electric auto drain is a device designed to expel moisture and water from the air receiver tank.

Interval Setting Feature

It has an adjustable interval setting feature that allows you to set the device from 1 to 45-minute drain cycles. You can also set the timing of how long you want the drain to stay open.

Muffler Air Silencer Included

For quiet dispensing moisture from the air receiver.


Belt Tensioner

Smooth, Accurate, and Long-Lasting

Dual-Bolt Belt Tensioner

Our dual-bolt belt tensioner makes belt adjustments easier and more precise. This design ensures proper alignment while maintaining optimal belt tension, reducing wear and tear for longer belt life and enhanced serviceability. Using pry bars to tension your belts is no longer required.


Belt Drive | V-Belt Design

Power You Can Rely On

Unlike competitors using narrow, single A-width belts, our compressors feature a multi-belt drive system with B and C-width belts. This design provides:

● More surface area for better grip
● Reduced belt tension, minimizing strain on motor and compressor bearings
● Lower noise and vibration, extending belt and system life

The result is a durable, efficient, and a low-maintenance drive system built for thousands of hours of trouble-free use.


Piston Compressor Warranty

Eaton Compressor, backs all our piston air compressors with the best extended warranty in the industry. With our extended warranty, we don’t ask you to buy a service plan, we just ask that you purchase and use our oil and filters. This ensures the correct oil and filters are being used, to keep your piston air compressor running for years to come. We have 3 different extended warranty options to choose from so you can pick what best suits your company’s needs. Make sure to research and ask questions, when comparing warranty information. Be certain, when you buy, that you are getting a full warranty. Our trained service and support team is ready to assist you if you ever need them and we carry a full line of air compressor replacement parts.

SKU: P01PXXXP07D120VXXXX Categories: , , , , Brand:
Brands

POLAR
HP

7.5
Tank Size

120
Voltage +/- 10%

230
Phase

1
Drive Type

Electric
Tank Drain

Automatic
Pump Type

PRESSURE
CFM

62.00
Silent Air

N
Smart Air

N
Compressor Type

Piston
Motor Type

ODP
Tank Orientation

Horizontal
Outlet Size

1"
Belt Count

2
Pump Stage

2
Pump Model

APP4V1043TP
Pump Riser

Y
Belt Tensioner

Y
Mag Starter

Y
Radiator

N
Peak Starting Amps

210.00
Pump RPM

590.00
Motor RPM

1740.00
FLA + 1.15 Service Factor

38.90
Locked Rotor Amps

210.00
Recommended Breaker

50.00
Max PSI

175.00
Uncrated Weight

0.00
Crated Weight

0.00
Uncrated Length

82
Uncrated Width

32
Uncrated Height

64
Crated Length

84
Crated Width

48
Crated Height

70
Oil Capacity

2.00
Oil U/M

Quarts
Start Type

Fixed
Estimated Pump Life (Hours)

70000.00
Certifications

ASME, CRN
Service Kit

FKIT008WBS
Battery Voltage

0.00
DBA

0.00
Max Ambient Temp (F°)

0.00
Max Inlet Temp (F)

0.00

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